: : : To expand on ESCs entry, I think the implication is... that if something is so fantastic, or so bad, or whatever (ie. so extreme), that you 'don't know you are born' until you've experienced it. It's just exagerating an emotion. Trying to paint an extreme mental picture.

: : You haven't lived till you've tried Haagen-Dasz. (NB This is a bare-faced lie, also known as marketing. Please do not take this literally.)